What's On Tonight

By KATHRYN SHATTUCK

Published: October 26, 2007

8 P.M. (Starz) BLOODSUCKING CINEMA This latest installment of ''Starz Inside,'' with the critic Richard Roeper as host, looks at the allure of vampire movies through clips from ''Dracula,'' ''Interview With the Vampire,'' ''The Lost Boys,'' ''Blade,'' ''Van Helsing'' (with Hugh Jackman, above) and ''Underworld,'' and interviews with the actors Kristanna Loken, Cheech Marin, Stuart Townsend and Corey Haim and the directors Len Wiseman, Joel Schumacher, John Landis and John Carpenter. It is followed by a 24-hour movie marathon beginning with ''Underworld: Evolution'' at 9 p.m. and including ''Dawn of the Dead'' (10:50 p.m.), ''From Dusk Till Dawn'' (12:35 a.m.), ''Blade'' (2:30 and 11:15 a.m.) and ''Silent Hill'' (7:35 a.m.).

12:15 P.M. (TCM) VOODOO ISLAND (1957) Halloween comes early to Turner Classic Movies with an afternoon fright fest, starting with Boris Karloff as a proto-ghostbuster hired by a wealthy industrialist to prove that the island he wants to develop isn't cursed. The zombie tribute continues with Bela Lugosi in ''Zombies on Broadway'' (1945) at 1:45, followed by ''King of the Zombies'' (1941) at 3; ''Revenge of the Zombies'' (1943), with John Carradine, at 4:15; and ''Zombies of Mora Tau'' (1957) at 5:30. Lugosi closes the afternoon with ''White Zombie'' (1932) at 6:45.

7 P.M. (National Geographic) HALLOWEEN UNMASKED Fright masters like the producer and director Roger Corman talk about the monsters that make our blood run cold and offer up little-known tidbits, like how the jack-o'-lantern started out as a turnip.

8:30 P.M. (22) GLOBAL WARMING ENLIGHTENMENT This ''Now'' episode follows an alliance of scientists and evangelical Christians to Alaska, where they witness the state's rapidly changing environment and explore the relationship between science and religion -- and the moral responsibility to protect the planet.

9 P.M. (Animal Planet) GORILLAS ON THE BRINK In this ''Saving a Species'' episode, the actress Natalie Portman, above right, travels to Rwanda with the animal handler Jack Hanna, above left, to witness the plight of the region's endangered primates, which number fewer than 700 in the wild.

10 P.M. (Sundance) THE BEAT THAT MY HEART SKIPPED (2005) A 28-year-old Frenchman (Romain Duris) tries to choose between a life of crime, like that of his father (Niels Arestrup), and a career as a concert pianist, like that of his dead mother, in Jacques Audiard's crime drama. Manohla Dargis, writing in The New York Times, called this remake of James Toback's ''Fingers,'' a 1978 film that starred Harvey Keitel, ''essential viewing.''